Patent GB-190101843-A (GB)
Title: Improvements in and relating to Fluid-pressure Motors and Bearings.
Inventor: NAEF PAUL
Filed: 1901-01-26
Granted: 1901-12-21
Abstract: 1843. Naef, P. June 30, A.D. 1900, [date applied for under Sec. 103 of Patents &c. Act, A.D. 1883.] Stuffing-boxes; cylinders.-Relates to the lubrication and cooling or heating of bearings, shafts, cylinders, &c. Fig. 1 shows the application of the invention to the bearing or stuffing-box of a piston-rod. The stuffing-box F attached to the end of the cylinder E is provided with an internal sleeve 22 having therein a number of longitudinal passages 23 communicating with annular ducts 24, 25. The annular space 26, which is closed by a bush 27, is supplied with lubricant through a pipe 30 by means of a pump &c. A refrigerating fluid is circulated through the annular ducts and longitudinal passages in the sleeve 22, suitable inlet and outlet pipes 32, 33 being provided for this purpose. This fluid serves to congeal thelubricant in the space 26 and causes it to act as a packing for the rod G as well as a lubricant. The box F may be dispensed with and the sleeve attached directly to the cylinder end, and the longitudinal and annular passages may be replaced by a serpentine passage running from one end to the other end of the sleeve. Fig 3 shows a method of cooling and lubricating a cylinder. The wall of the cylinder is provided with a number of longitudinal ducts 37 communicating with annular ducts 38 and outlet ducts 39. The ducts 38 are connected by short pipes to annular pipes 40 encircling the cylinder, each of which pipe is provided with a valve 43 for regulating the supply of cooling-fluid to the cylinder walls. The outlet pipes from the ducts 39 lead to a suitable cooling plant, where the fluid is re-cooled. The supply pipe 44 for the cooling fluid communicates with the chambers of the valves 43. A number of pipes 55, provided with valves 56, encircle the cylinder and are connected to the interior of the cylinder by a number of injector tubes 59. The valve chambers are connected to a pipe 57 for supplying lubricant. A rod 53, attached to the piston-rod 52 by a link, carries a cam block 54, which is adapted to engage the stems of the valves, as the piston moves, so as to open the valves and admit cooling-fluid to the walls and a lubricant to the interior of the cylinder. Any other suitable arrangement of valves and operating-mechanism may be employed, and the valves may be arranged to cause the cooling-fluid to escape alternately from the outlets at the ends of the cylinder. In modifications, the size and number of the tubes and ducts are varied. The longitudinal ducts may be formed by grooving the cylinder wall and inserting a liner. The cylinder may be made in segments, provided with ducts, which segments are made with flanges and bolted together. The ducts in the segments may be arranged to register or may terminate in each segment and be connected by pipes. Suitable pipes for the inlet and outlet of the cooling-fluid are provided, the inlet pipes being fitted with valves, or a valve arrangement such as above described may be provided. In the case of old cr very large engines, the ducts may be arranged in a liner titted within the cylinder. This liner may be made in segments with tongue and groove connections. In the case of steam engines, a heating-fluid, such as hot combustion gas, may be passed through the walls instead of a cooling-fluid.